In the given diagram, identify A, B, C and D respectively:

  • LH, FSH, Progesterone and Estrogen

  • FSH, LH, Estrogen and Progesterone

  • Estrogen, Progesterone, LH and FSH

  • Progesterone, Estrogen, FSH and LH

In the given diagram the part of the female reproductive system that undergoes cyclical changes with changes in the secretion of gonadotropins and gonadal steroids during the menstrual cycle is represented by:

  • A

  • B

  • C

  • D

Which of the structures shown in the following diagram contributes the source of nutrition for the sperms ejaculated in the semen?

  • A

  • B

  • C

  • D

No new follicles develop in the luteal phase of the menstrual cycle because :

  • Follicles do not remain in the ovary after ovulation

  • FSH levels are high in the luteal phase

  • LH levels are high in the luteal phase

  • Both FSH and LH levels are low in the luteal phase

Meiotic division of the secondary oocyte is completed:

  • At the time of copulation

  • After zygote formation

  • At the time of fusion of a sperm with an ovum

  • Prior to ovulation

Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?

  • High concentration of Progesterone

  • Low concentration of LH

  • Low concentration of FSH

  • High concentration of Estrogen

Match the follwing columns and select the correct option .

   Column-l                            Column-ll 

(a) Placenta                        (i) Androgens  

(b) Zona pellucida               (ii) Human chroinic Gonadotropin 

(c) Bulbo-urethral glands     (iii) Layer of the ovum 

(d) Leydig cells                    (iv) Lubrication of the Penis 

      a         b         c      d

  • (i)      (iv)      (ii)    (iii) 

  • (iii)      (ii)    (iv)     (i) 

  • (ii)     (iii)      (iv)    (i) 

  • (iv)     (iii)     (i)      (ii) 

In human beings, at the end of 12 weeks (first trimester) of pregnancy, the following is observed:

  • Eyelids and eyelashes are formed

  • Most of the major organ systems are formed

  • The head is covered with fine hair

  • Movement of the fetus 

Select the correct option of haploid cells from the following groups :

  • Primary oocyte, Secondary oocyte, Spermatid

  • Secondary spermatocyte, First polar body, Ovum

  • Spermatogonia, Primary spermatocyte, Spermatid

  • Primary spermatocyte, Secondary spermatocyte, Second polar body

Match the following columns and select the correct option :

      Column - I       Column - II

(a) Ovary                 (i) Human chorionic Gonadotropin

(b) Placenta             (ii) Estrogen & Progesterone

(c) Corpus luteum     (iii) Androgens

(d) Leydig cells         (iv) Progesterone only

  • (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

  • (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

  • (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

  • (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman and select the right option for the two together -

Developmental stage Site of occurrence
1. Blastula End part of Fallopian tube
2. Blastocyst Uterine wall
3. 8-celled morula Starting point of Fallopian tube
4. Late morula      Middle part of Fallopian tube

                                
 
  • 1
  • 2
  • 3
  • 4

Receptors for sperm binding in mammals are present on:

  • Perivitelline space 

  • Zona pellucida

  • Corona radiata

  • Vitelline membrane

Which of these is not an important component of initiation of parturition in humans? 

  • Release of Oxytocin

  • Release of Prolactin

  • Increase in estrogen and progesterone ratio

  • Synthesis of prostaglandins

A batch of students are taught about fertilisation and implantation. They have to answer the following questions by referring to the diagram.

In the ‘a’ structure, the cells which are arranged like sun’s rays are a part of which layer?

  • Zona pellucida

  • Corona radiata

  • Vitelline membrane

  • Perivitelline space

A batch of students are taught about fertilisation and implantation. They have to answer the following questions by referring to the diagram.

As shown in the diagram, the egg fertilization occurs at B. Instead of implanting at H it gets implanted at D. Which type of pregnancy would this be?

  • Ectopic pregnancy

  • Intrauterine pregnancy

  • Fimbrial pregnancy

  • Cervical pregnancy

All of the following cells are diploid in human body, except

  • Primary spermatocyte

  • Primary oocyte

  • First polar body

  • Zygote

Which cell of the sperm lineage undergoes the reduction division during spermatogenesis?
  • Spermatogonium
  • Primary spermatocyte
  • Secondary spermatocyte
  • Spermatid
Which of the following reproductive organs in human males is unpaired?
  • Testis
  • Seminal vesicle
  • Prostate
  • Bulbo-urethral gland
The peak secretion of which of the following hormones does not coincide with the day, in the menstrual cycle, of the peak secretion of other three hormones?
  • Oestrogen
  • Progesterone
  • LH
  • FSH
Regarding the male accessory sex ducts:
  • About 200 seminiferous tubules are present in testis lobule
  • Epididymis is located along the anterior surface of each testis
  • Vas deferens ascends to the abdomen and loops over the bladder
  • Ducts of seminal vesicles open at the urethral meatus
A fluid-filled cavity called as ‘antrum’ is characteristically seen in a:
  • Secondary follicle
  • Tertiary follicle
  • Morula
  • Blastocyst

The hormone, essential for maintaining pregnancy, secreted in large amount by corpus luteum is:
  • Estrogen
  • Progesterone
  • LH
  • FSH

Identify the incorrect statement regarding fallopian tubes:
  • Infundibulum possesses fimbriae
  • Fertilization takes place in the narrowest part of fallopian tube called ampulla
  • Isthmus joins the uterus
  • It is lined with ciliated epithelium
What prevents the development of new follicles during the post-ovulatory luteal phase of the menstrual cycle?
 
  • A very low level of progesterone and oestrogen secretion by the corpus luteum
  • Secretion of high levels of FSH by the corpus luteum
  • LH surge just before ovulation
  • Low levels of both FSH and LH levels
The secondary oocyte completes the second meiotic division:
  • At the time of insemination
  • At puberty
  • At the time of fusion of a sperm with an ovum
  • Just before birth
Identify the set of hormones secreted by placenta that are essential to maintain pregnancy:
 
  • hCG, hPL, progesterone, prolactin
  • hCG, hPL, estrogens, relaxin, oxytocin
  • hCG, hPL, progesterone, estrogens
  • hCG, progesterone, estrogens, glucocorticoids
Ovary does not secrete:
  • Estrogen
  • Progesterone
  • Relaxin
  • Human chorionic gonadotropin
Luteinizing hormone:
I. acts at the Leydig cells and stimulates synthesis and secretion of androgens.
II. acts on the Sertoli cells and stimulates secretion of some factors which help in the process of spermiogenesis.
  • Only I is correct
  • Only II is correct
  • Both I and II are correct
  • Both I and II are incorrect
Match each item in Column I with one in Column II and select the correct match from the codes given:
COLUMN I COLUMN II
A. Sertoli cells P Secretion of androgens
B. Leydig cells Q Spermiogenesis
C. Uterine Myometrium R Implantation
D. Uterine Endometrium S Parturition

Codes:
A B C D
1. P R Q S
2. R S P Q
3. Q P S R
4. S Q R P

 
  • 1
  • 2
  • 3
  • 4
Identify the incorrectly matched pair:
 
  • LH surge: Ovulation
  • Corpus luteum: Ruptured Graafian follicle
  • hCG: Secreted by ovary during pregnancy
  • Oxytocin: Milk ejection
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Practice Zoology Quiz Questions and Answers